Machine for making sheath ing-paper



(N6Mode1.)-

W. H. H. UHILDS.

MACHINE FOR MAKING SHEATHING PAPER. v No. 361,050. r Patented Apr. 12,1887.

} WITNESSES! N INVENTQR: W ,BY C

- S ATTORNEYS.

N. PETERS. HMwU'hognbh-n Wzxhington. D. Q

UNITED STATES PATENT OFFICE.

WILLIAM-H. H. OHILQDS, or BROOKLYN, NEW YORK.

MACHINE FOR MAKING SHEATHING-PAPER.

SPECIFICATION forming part of Letters Patent No. 361,050, dated April12, 1887.

Application filed December 20, 1886. Serial No. 222,032. (No model.)

To aZZ whom, it mag concern.-

Be it known that I,WILLIAM H. H. CHILDS, of Brooklyn, in the county ofKings and State of New York, have invented a new and useful Improvementin Machines for Making Sheathing-Paper, of which the following is afull, clear, and exact description.

My invention relates to a new and improved machine for making sheathingor other coated paper in which the edges are to be kept free from thecomposition applied. Hitherto this has been effected by applying themelted pitch, asphalt, or other substance to the paper by means of aroll narrower than the paper itself. This involved, where two-ply paperwas to be prepared, the use of an extra roller for applying thecomposition, the two plies then being united by passing through regularrollers of full width. Again, by this process and mechanism a limitedamount only of pitch could be applied,as it was all derived from thesurface of a roller. No approach to immersion of the fabric waspossible.

By my improved machine these features are avoided. As regards the innersurfaces, the sheets of paper are immersed in a body of the coatingmaterial. Such material is confined to the center or any desired sectionof the sheets. Adjustments may be provided for by which the 0 width ofthis coated portion may be changed.

The apparatus can be adjusted to paper of different thickness and toirregularities in the sheets without stopping the machine. This latterfeature is one of the elements of my invention. l

Having now declared some of the advantages in my apparatus, I willproceed to describe its construction more particularly.

Figure 1 is a perspective view of my iniproved machine. Fig. 2 is a viewof one section of a retaining-piece.

R R are two rollers of the usual description, mounted on aframe, A, oneor both of which may be mounted in adjustable bearings, as shown,whereby these rollers can beadj usted as regards their distance fromeach other by screwsa, or equivalent devices. Paper is fed to andbetween the rolls from two rolls, B B, or other source of supply. Thetwo sheets pass over the upper surface of the rollers B R and downbetween them. The space between the rollers is adjusted so as to suitthe thickness of the sheets, and yet so as not to be too tight to allmit of a proper supply of the pitch or other material being preserved onand fed through with the paper.

Two retaining-pieces, C0, are provided, of

such shape as to fit closely against the surface of the paper where itis in contact with theupper and inner surface of the rolls at w or. Toadapt the pieces 0 to the distance of the rolls from each other, theyare formed of two similar overlapping parts, 0, and adjustment of theseparts 0 to meet these changes is provided for by bolts y and slots Bythese the lateral adjustment is effected. To meet vari ations in thethickness of the paper, screws 0 c,working in slotted lugsd d on theparts 0 and entering threaded apertures e e in the frame, are provided.The pieces 0 can be raised or lowered equally at each end, or either endmay be adjusted independently of the other. Thus, if thicker paper comesfrom one side than from the other, a special adjustment of one end ofthe pieces 0 can be made. The width of the uncoated margin or of thespace to be coated is regulated by the bolts G G uniting the pieces 0 O.The object is to have these pieces fit against the paperas tightly ascompatible with the general operation of the machine.

The operation is as follows: The rollers R R are revolved, drawing thetwo pieces of paper down between them. The space included between therollers and the two pieces-C 0 forms a trough or receptaclesubstantially tight. Into itis poured melted asphalt, coal-tar, pitch,or any other cementing preservative or disinfecting compound from a pipeand faucet, D, or by other means. The paper is fed down between therollers, carrying with it, adhering to its two surfaces, any desiredamount of the material, according to the lateral adjustment of therollers. Owing to the close fit between the side pieces and paper, nolateral spreading of the composition takes place. Even if there were atendency to such spreading, the continual new supply of paper wouldeffectually prevent it. Furthermore, by adjusting the spacehetweentherollers more or less of the composition will be carrieddown,.adhering to or absorbed by the paper. The margins in any case arekept clean and perfectly free from any composition. This feature makesthe product suitable for transportation and conven ient handling, as thepitch or tar does not escape from the inner surfaces on account of thismargin.

I have now described the machine and its operation where the two pieces0 O are employed to produce two clean margins; but I maydispense withone of these pieces and, op erating the machine substantially as justdescribed, obtain a paper with one margin or portion only protected.Then aregular exterior side piece has to be employedsuch as is shown indotted lines at E. The piece C may then be set at any point, so thatonly one-half or less of thepaper may be coated or cemented.

I am aware that two-ply paper possessing this feature of uncoatedmargins has already been made. I am also aware that by the use of anarrow roll the surface ofa sheet of paper has had the central portionsof its area coated with asphalt or similar substance.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. In a machine for coating paper, two rollers with one or more piecesclosely fitting on their upper and inner surfaces, forming with suchsurfaces a trough or hopper arranged at intermediate portions betweentheir ends, substantially as shown and described.

2. The pieces 0 0, adjustable laterally by the bolts y y and slots,substantially as shown and described.

3. The pieces 0 0, adjustable Vertically by the screws 0 c,substantially as shown and described.

4. The process of coating arestricted area of one or more sheets ofpaper, which consists in sustaining a supply of asphalt or othermaterial in fusion upon the restricted areain question of the paperwhere it passes over the rolls, substantially as shown and described.

5. The combination, with two rolls, of adjustable retaining'pieces heldbetween the rolls to bear upon the surfaces of the paper passing overand between the rolls, substantially as set forth.

6. The combination, with the rolls R It, of the pieces 0 0, having lugsd, and the bolts 0, substantially as shown and described.

7. The combination, with the rolls R It, of the adjustable pieces 0,fitting between the rolls, the bolts 0, engaging the said pieces, andthe bolts G, substantially as shown and described.

8. The combination of side pieces, 0, formed of the two overlappingparts C, having slots y, and the bolts y, substantially as shown anddescribed.

\VILLIAM H. H. CHILDS.

Vitnesses:

LINDLEY F. SEAMAN, O. E. LOOKWOOD.

